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Surname Gaisa (Гайса , Gaisa , Гаиса ) , throughout the world, is a rare last name. The cognomen Gaisa is characteristic of Belarus, where it is quite a rare surname, Latvia, and Kazakhstan, where it is a rare surname. Not in comparison with a country's population, the name is most common in Belarus, Russia, and Nigeria. More frequently, Gaisa is the forename as well as the last name.